Automatic ramp-up minimizes composite shrinkage. Powerful curing light and programmable curing times between 5 and 30 seconds. High performance lithium-ion battery provides over 750 ten-second cycles. Charging base display indicates battery status. New black-coated, removable, autoclavable light guide reduces glare. Angled light guide rotates 360 degrees to provide enganced access. 1- year warranty.